| 摘要 |
An antenna (60) which is housed in a housing space (18) which is formed from a radome (20) and a housing (10) comprises a transmission antenna (64) which carries out a transmission, and a receiving antenna (66) which carries out a receiving, of radar waves formed from a predetermined frequency of radio waves. The radome (20) further comprises a pass-through part (32) which is a site through which radar waves pass, and an attenuation part (31) is a site whereat the radar waves are attenuated. The attenuation part further comprises first attenuation layers (41, 43) which are formed of a material which attenuates radar waves. The first attenuation layers (41, 43) have thicknesses determined by (2n-1 * (1/4 the wavelength of radar waves in the first attenuation layers (41, 43))), where n is a natural number. |
